Attachment to furnace-jackets.



F. M. GROUT. ATTACHMENT T0 FURNACE JACKETS. APPLICATION FILED AUG. 10, 1915.

1,1 83,49. Patented May16, 1916.

2 SHEETSSHEET I. mF/a k I l 36 w I U U =M GIFT T I\ =flEl I /5 f 1 Z? v Z2 3 I Z 77 2/ Witnesses Z3 2/ i [9 entor THE COLUMBIA-PLANDGRAPII co., WASHINGTON. D- c.

F. M. GROUT. 1 ATTACHMENT To FURNACE JACKETS.

APPLICATION FILED AUG- |0| 1915- l,183,449. Patented May 16, 1916.

2 SHEETS-SHEET 2- .33 3,5 Witnesses 3.? 4 Inventor f\ I 7. g 1%, i/IF Attorneys THE COLUMBIA PLANOURAPH 50., WASHINGTON,.p. c..

FRANK M. GROUT, F SHELBINA, MISSOURI.

ATTACHMENT TO FURNACE-JACKETS.

Specification of Letters Patent.

Patented May 16, 1916.

Application filed August 10, 1915. SerialNo. 44,742.

fire ots of \videl different forms a sin le register furnace may be constructed readily. The invention aims to provide novel means for operatively connecting the inner and outer jackets and for maintaining the same in proper relation with respect to each other.

It is Within the scope of the disclosure to improve generally and toenhancethe utility of devices of that type to which the present invention appertains. 7

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings :-Figure 1 shows in front elevation, a furnace constructed in accordance with the present invention, parts being broken away; Fig. 2 is a cross section; Fig. 3 is a vertical section; Fig. 1 is a fragmental transverse section on an enlarged scale; Fig. 5 is a fragmental elevation showing a portion of one of the tightening bands. Fig. 6 is a detail enlarged from Fig. 3. Fig. 7 is a fragmental perspective view showing one of the washers and the part wherewith the washer 2 operates.

In the accompanying drawings there is shown a heater body 1 carrying a radiator 2 having an outlet 3, and a clean out tube 41. having a movable closure 5. This clean out tube 4: may be placed in any desired position. The body 1 is equipped with a stoke door extension 6 and an ash door extension 7, the stoke door extension 6 carrying a stoke door 8 and the ash door extension 7 carrying an ash door 9.

Surrounding the body 1 and the radiator 2 is an inner casing 10 provided with an opening 11 bridged across by a front plate 12,the extensions 6 and 7 passing through the front plate 12. The inner casing 10 is provided adjacent its bottom with a plurality of openings 16. Located at the upper end of the inner casing 10 and constituting a part thereof is a flue 14.

Surrounding the inner casing 10 is an outer casing 15 having an opening 17 and comprising a flue 18 surrounding the flue 141 of the inner casing 10. The front plate 12 may carry a. water pan 19, located between thestoke door 8 and the ash door 9. Thimbles 20 extend between the casings 10 and 15, the thimbles 20 surrounding the outlet 3 and the clean out tube -l-. The invention contemplates the use of a frame 21 preferably in the form of a channel member,the frame 21 embodying a rear flange 22'abutting against the inner casing 10, and a front flange within the contour of which the edge of the outer casing 15, about the opening 17, extends. The flange 23 terminates in a forwardly presented extension 24. which is of troughlike or concaved form. frame 21 may be made of cast iron, or pressed or drawn steel. It may be flat on top or curved as shown. Secured to the outer casing 15 and extended circumferentially thereof are retaining bands 25 equipped at their ends with rectangular extensions 26 located adjacent the frame 21. Secured to the extensions 26 of the bands 25 and constituting a part thereof are plates 27 disposed at right angles to the flanges 23. The plates 27, as shown in Fig. 5 are provided terminally with inclined notches 28, one edge of the notch 28 being designated by the reference character 36. Securing elements which may be bolt and nut structures 29 are mounted in the side portions of the frame 21 and are adapted to enter and cotiperate with the notches 28 in afmanner which will be pointed out herein a ter.

Secured to the outer face of the outer casing 15 and located adjacent the frame 21 are angle brackets 30 with the outstanding arms 32 of which are connected tightening devices 33 which may be in the form of bolt and nut structures, the heads of the bolts passing through the trough-like portions 24 of the flanges 23 of the frame 21 and being countersunk into longitudinally elongated washers 35, convexed on one face to fit into The the concavity of the parts 24 of the flanges 23.

Owing to the fact that the structure hereinbefore described comprises the frame 21, the furnace may be set up readily and proper adjustments being made, it being necessary, in order to provide the necessary circulation, merely to out the openings 16 in the inner casing 10.

In practical operation, when the bolts 33 are tightened up, the outer casing 15 will be tightened up circumferentially, so that its vertical edges will lie properly. within the contour of the flanges 23. When the bands 25 on the outer casing 15 are drawn circumferentially in the manner hereinbefore described, the edges 36 of the notches 28 ride along the bolt and nut structures 29 and thus, the free, vertical edges of the casing 15 are crowded outwardly against the flanges 23.

In practical operation, as indicated by the arrows, cold air passes downwardly between the flues 14: and 18-and between the casings 10 and 15, the cold air entering within the casing 10, through the openings 16. The air then is heated and passes upwardly within the contour of the inner casing 10, and out through the flue 14, as will be understood readily from Fig. 3.

As shown best in Fig. 6, the upper portion 50 of the outer casing 15 maycarry one or more angle-brackets 51 supporting nuts 52. Bolts 53 pass through the top 54 of the frame 21 and coact with the nuts 52, the latter engaging along one edge with the casing 15 so that they cannot rotate.

Especial attention is directed tothe fact that the device forming the subject matter of this application is adapted to be employed in connection with many forms of furnaces which are known and in use, it being necessary to provide merely a frame 21, the construction being such that the frame may be applied after the casings have been set up.

Having thus described the invention,

what is claimed is 1. In a device of the class described, an

inner casing; an outer casing; a frame bridging the space between the casings; a heater body having an extension prolonged within the contour of the frame; the frame having a front flange provided with an outward extension, the flange acting as a guide for the edge of the outer casing; and a circumferentially adjustable tightening device forming an operative connection between the outer casing and the extension.

2. I11 a device of the class described, an inner casing; an outer casing; a heater body within the inner casing and provided with an extension; a door carried by the extension; a frame uniting the casings, the extension lying within the frame, the frame including a front flange receiving the edge of the outer casing, the front flange being provided with a concaved seat; a convexed washer fitting in theseat; a bracket secured to the outer casing; and a tightening device assembled with the washer and the bracket.

3. In a device of the class described, inner and outer casings; a frame connecting the casings; a band assembled with the outer casing and having at each end an inward eX- tension provided with an inclined notch; securing devices carried by the frame and received in the notches; and a tightening means connecting the outer casing with the frame.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

FRANK GROUT.

Witnesses:

T. A. HENINGER, H. F. HENINGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

